Movie--In the original movie at the end when the credits are rolling is the music supposed to sound like it's skipping or getting distorted?

SAC--How is it that all the members can become invisible? In the movie was only the major able to do this? And in the movie didn't the major have to remove her clothes to blend into the environment? In the TV show it's different.

Can't help you with the music thing. However, as far as invisibility goes, it's not an ability limited to the Major. If I'm not mistaken, Tachikomas can do it as well, and just about anyone who has the ability implanted. It's a technological thing. I credit her 'getting naked' to mere fanservice, which had to be revised for a television show. It's an inconsistency, but I'd say any other explanation is a stretch.